package com.coffee.wx.uitls;

import cn.hutool.core.io.FileUtil;
import cn.hutool.core.util.RandomUtil;
import cn.hutool.http.HttpRequest;
import cn.hutool.http.HttpResponse;
import cn.hutool.json.JSONUtil;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;

public class SendHttpUtils {


    /**
     * get方式的http请求
     *
     * @param httpUrl  请求地址
     * @param paramStr 请求参数
     * @return 返回结果
     */

    public static String doGet(String httpUrl, String paramStr) {
        HttpURLConnection connection = null;
        InputStream inputStream = null;
        BufferedReader bufferedReader = null;
        String result = null;// 返回结果字符串
        try {
            if (paramStr != null) {
                httpUrl += "?" + paramStr;
            }
            // 创建远程url连接对象
            URL url = new URL(httpUrl);
            // 通过远程url连接对象打开一个连接，强转成httpURLConnection类
            connection = (HttpURLConnection) url.openConnection();
            // 设置连接方式：get
            connection.setRequestMethod("GET");
            // 设置连接主机服务器的超时时间：15000毫秒
            connection.setConnectTimeout(15000);
            // 设置读取远程返回的数据时间：60000毫秒
            connection.setReadTimeout(60000);
            // 设置请求头
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            // 发送请求
            connection.connect();
            // 通过connection连接，获取输入流
            if (connection.getResponseCode() == 200) {
                inputStream = connection.getInputStream();
                // 封装输入流，并指定字符集
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
                // 存放数据
                StringBuilder sbf = new StringBuilder();
                String temp;
                while ((temp = bufferedReader.readLine()) != null) {
                    sbf.append(temp);
                    sbf.append(System.getProperty("line.separator"));
                }
                result = sbf.toString();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            if (null != bufferedReader) {
                try {
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (null != inputStream) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (connection != null) {
                connection.disconnect();// 关闭远程连接
            }
        }
        return result;
    }

    /**
     * post方式的http请求
     *
     * @param httpUrl 请求地址
     * @param params  请求参数
     * @return 返回结果
     */
    public static String doPost(String httpUrl, Map<String, Object> params) {
        String paramStr;
        if (params == null) {
            paramStr = "";
        } else {
            paramStr = JSONUtil.parse(params).toString();
        }
        HttpURLConnection connection = null;
        InputStream inputStream = null;
        OutputStream outputStream = null;
        BufferedReader bufferedReader = null;
        String result = null;
        try {
            URL url = new URL(httpUrl);
            // 通过远程url连接对象打开连接
            connection = (HttpURLConnection) url.openConnection();
            // 设置连接请求方式
            connection.setRequestMethod("POST");
            // 设置连接主机服务器超时时间：15000毫秒
            connection.setConnectTimeout(15000);
            // 设置读取主机服务器返回数据超时时间：60000毫秒
            connection.setReadTimeout(60000);
            // 默认值为：false，当向远程服务器传送数据/写数据时，需要设置为true
            connection.setDoOutput(true);
            // 设置传入参数的格式:请求参数应该是 name1=value1&name2=value2 的形式。
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            // 通过连接对象获取一个输出流
            outputStream = connection.getOutputStream();
            // 通过输出流对象将参数写出去/传输出去,它是通过字节数组写出的
            outputStream.write(paramStr.getBytes());
            // 通过连接对象获取一个输入流，向远程读取
            if (connection.getResponseCode() == 200) {
                inputStream = connection.getInputStream();
                // 对输入流对象进行包装:charset根据工作项目组的要求来设置
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
                StringBuilder sbf = new StringBuilder();
                String temp;
                // 循环遍历一行一行读取数据
                while ((temp = bufferedReader.readLine()) != null) {
                    sbf.append(temp);
                    sbf.append(System.getProperty("line.separator"));
                }
                result = sbf.toString();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            if (null != bufferedReader) {
                try {
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (null != outputStream) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (null != inputStream) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (connection != null) {
                connection.disconnect();
            }
        }
        return result;
    }

    /**
     * http发送携带文件的post请求
     *
     * @param url
     * @param fileUrl
     * @param fileParamName
     * @return
     */
    public static String doPostFileByFileUrl(String url, String fileUrl, String fileParamName) {

        // 将图片下载到本地
        String tempFilePath = FileUtil.getTmpDir() + FileUtil.FILE_SEPARATOR + RandomUtil.randomString(20) + ".jpg";
        File imageFile = FileUtil.file(tempFilePath);
        HttpRequest.get(fileUrl).execute().writeBody(imageFile);

        // 创建请求
        HttpRequest request = HttpRequest.post(url);

        // 添加文件参数
        request.form(fileParamName, imageFile);
        HttpResponse response = request.execute();
        String body = response.body();
        FileUtil.del(tempFilePath);
        return body;
    }

    /**
     * http发送携带文件的post请求
     *
     * @param url
     * @param filePath
     * @param fileParamName
     * @return
     */
    public static String doPostFileByFilePath(String url, String filePath, String fileParamName) {

        // 创建请求
        HttpRequest request = HttpRequest.post(url);

        // 添加文件参数
        request.form(fileParamName, FileUtil.file(filePath));
        HttpResponse response = request.execute();
        String body = response.body();
        FileUtil.del(filePath);
        return body;
    }

}
